Dongfeng briefly introduces stainless steel corrugated compensator
Shanghai Dongfeng Pump Valve Factory will introduce to you: a complete set of knowledge introduction: basic knowledge information about corrugated compensator. Our factory specializes in producing various corrugated compensator products, mainly including stainless steel metal hose, stainless steel corrugated compensator, etc.
1. Brief introduction to the compensator The function and working principle of the compensator The bellows compensator is also known as expansion joint and expansion joint, which is composed of the bellows (an elastic element) that constitutes the main body of the compensator, end pipes, supports, flanges, conduits and other accessories. It is a compensation device used to absorb the size change of pipeline, conduit or container caused by thermal expansion and cold contraction by using the effective expansion deformation of the elastic element of the bellows compensator. It belongs to a compensation element. It can absorb axial, transverse and angular displacement, and is widely used in modern industry for heating displacement, mechanical displacement, vibration absorption and noise reduction of pipes, equipment and systems.
2. Executive standard of compensator:
The metal corrugated pipe adopts GB/T12777-91 and refers to the American "EJMA" standard. It has the advantages of reasonable structure, stable performance, high strength, good elasticity, high fatigue resistance, etc. It is made of 1Cr18Ni9Ti, OCr19Ni9 austenitic stainless steel, and the connecting pipes or flanges at both ends are made of low-carbon steel or low-alloy steel.
Metal bellows -- the compensator is made of U-shaped waves in single layer and multiple layers, with large compensation amount, pressure resistance up to 4Mpa, service temperature -- 1960C -- ≤ 450 degrees, compact structure, low use cost, corrosion resistance, good elasticity, low rigidity value, and allowable fatigue life of 1000 times, which solves the flexible connection between the pipeline and displacement and mechanical high-frequency vibration, Widely used in oil, heat, power, gas, chemical and other pipeline installation.
3. Compensator connection mode:
The connection mode of compensator is divided into flange connection and welding. The directly buried pipeline compensator is generally welded (except for trench installation)
4. Compensator type:
Compensators are divided into three types: axial type, transverse type and angular type, with more than 20 varieties.
Axial type compensators mainly include: internal pressure type, external pressure type, compound type, balanced type, direct buried type, etc.
Transverse type compensators include: large tie rod transverse compensator, universal hinge transverse compensator, etc.
Angular type compensators include hinge compensators, universal hinge compensators, etc.
2、 Compensator function:
Compensator is also called expansion joint, expansion joint and corrugated compensator. Compensators can be divided into several types: corrugated compensator, sleeve compensator, rotary compensator, square natural compensator, among which corrugated compensator is more commonly used, mainly to ensure the safe operation of the pipeline, and has the following functions:
1. Compensate the axial, transverse and angular thermal deformation of absorption pipe.
2. The expansion and contraction of the corrugated compensator is convenient for the installation and disassembly of the valve pipeline.
3. Absorb equipment vibration and reduce the impact of equipment vibration on pipeline.
4. Absorb the deformation of pipeline caused by earthquake and ground subsidence.
The square natural compensator has two functions:
1. When the pipeline crosses the foundation beam or basement wall, in order to avoid the pressure of foundation settlement on the pipeline, it is necessary to install a square compensator.
2. If the thermal pipeline is too long, it is necessary to install a square compensator to reduce the stretching of the pipeline caused by "thermal expansion and cold contraction".
Shanghai Dongfeng Pump Valve Factory will introduce to you: a complete set of knowledge introduction: basic knowledge information about corrugated compensator. Our factory specializes in producing various corrugated compensator products, mainly including stainless steel metal hose, stainless steel corrugated compensator, etc. Compensator
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